A business that specializes in sourcing contact lists that direct marketers can rent for an email or marketing campaign. List brokers typically have access to a huge variety of lists and existing relationships with list owners. They also have expertise in recommending the best lists to use based on your target audience, brand, and marketing goals. In exchange for you renting a list, the list broker typically charges a commission, which the list owner pays for.

The 3 Things To Avoid When Emailing Your List
When you decide to have an opt-in list, it is not just a matter of sending your subscribers your promotional newsletters or catalogs.